Elevator-shaft or well-way gate.



No. 801,752. PATENTED OCT. 10, 1905.

M. TURNBULL.

ELEVATOR SHAFT OR WELL WAY GATE.

APPLICATION FILED JULY 29v19o4 2 SHEETS-SHEET 1.

N0- 80l,752. PATENTED 10, 1905. M. TURNBULL.

ELEVATOR SHAFT 0R WELL WAY GATE.

APPLICATION rum JULY 29. 1904.

2 sums-sum 2.

WITNESSES. of {a -Q 5 MICHAEL TURNBULL, OF TORONTO, CANADA.

ELEVATOR-SHAFT OR WELL-WAY GATE.

Specification of Letters Patent.

Patented Oct. 10, 1905.

Application filed July 29, 1904. $erial No. 218,700.

To m/l whom, it Huey concern:

Be it known that I, MICHAEL TURNBULL, of the city of Toronto, in the county of York, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Elevator-Shafts or lVell-WVay Gates, of which the following is a specification.

My invention relates to improvements in elevator-shafts or well-way gates; and the object of the invention is to devise a simple and efficient means whereby the gate may be raised when the elevator-cage reaches the landing and lowered again as the elevator-cage passes away from the landing and which will be 0perated by the elevator-cage in its ascent and descent and at the same speed as the elevatorcage, which will be of a maximum strength and worked without any strain and with but a minimum amount of power; and it consists, essentially, of bracket-dogs secured on each side of the gate, supporting chains or cords for the gate attached at the side to the gate and passing over pulleys, sliding counterweights secured to the free ends of the cords, dogs located thereon reversely set to the dogs on the gate, two pivoted spring actuated catches secured on the uprights of the ele vator-cage and designed to coact with the bracket-dogs on the gate, and two reverselyset spring-actuated catches secured on the uprights of the elevator-cage and designed to coact with the dogs on the counterweights, the parts being otherwise arranged and constructed in detail, as hereinafter more particularly explained.

Figure 1 is a perspective view showing my improved gate, the elevator-cage being broken away and in section. Fig. 2 is a side elevation showing a detail of the catch. Fig. 3 is a part plan. Fig. 4 is a side view.

In the drawings like letters of reference indicate corresponding parts in each figure.

A represents the stiles, and A the head of the doorway, in an elevator-shaft.

B is the gate of the doorway, which is provided with the side bars 6 b, by which it is hung by the ropes or cords O, passing over the pulleys D and provided at the opposite end with the slidingweights E, having move ment on suitable guideways e.

E is a dog-catch on each weight E.

F represents dog-catches secured to the bottom of the bars Z) of the gate.

G represents guideways secured to the doorframe A and into which the side bars 7) of the gate B extend.

r/ represents plates provided with beveled ends secured to the inner faces of the guideways G in proximity to the grooves in the same and located toward the upperend of the guideways.

H is the elevator-cage having the uprights I I, which are designed to move closely to the guideways G as the elevator-cage ascends and descends.

J J are catches pivoted on the uprights I.

K K are plates having beveled ends and each having a central slot in, through which extends a pin Z", secured to the bracket K. The plate K is held in position on the bracket by a retaining-plate k and the bracket K is secured to the outside face of the guii'leway G.

L L are catches pivoted on the bars Land each catch is provided with a projecting portion 1, which is designed to engage with the dog E on the weight E.

1 represents springs designed to normally force the projecting portions Z into the path of the dogs E. Each catch L is provided with a tail which is designed to prevent the spring J from forcing the projecting portion Z over too far by pressing on the upright.

The catches L are reversely set to the catches J; but the catches J are formedin the same way.

Having now described the principal parts involved in my invention, I shall briefly describe the operation and utility of my device for opening and closing the gate.

As the elevator-cage ascends from the floorlevel the gate B descends, as the catches L in passing upwardly allow of the weights E, with the dogs of which they engage, to ascend, as the weight of the gate B is heavier than the combined weights E. The elevator-cage continuing to ascend leaves the gate down or in the closed position. hen the elevator-cage, however, passes up to the next floor, the catches J come in contact with the dogs F on the gate of that floor and raise the gate until the floor of the elevator-cage has reached the level of that floor. The weights E are consequently caused to descend, and the catches in further ascending are thrown outwardly by the beveled plates 9, so as to disengage the dogs, at which point the catches L will have sprung over the dogs E, and thereby hold the gate up during the period that the elevator-cage is at this floor. Immediately, however, the elevator-cage starts to ascend again the gate B also descends on account of the catches L ascending and pernntting the weights E to as over the plates g and be guided underneath the dogs F, and thereby hold the gate during the period that it remains at the landing.

It will of course be understood that there is a gate with dogs and pulleys and cords and weights,'as above described, at each landing or floor and that the catches J and Lwill operate in identically the same manner in reference to the dogs F and weights E and dogs E.

I preferably make the plates K slotted, so as to allow of any stretch of the ropes or cords C by which the weights E are supported. The slots also in the plates provide for a different tripping-point as the elevator-cage descends from the point of trip when the elevator-cage ascends, as it will be understood it cords provided with dogs, of the upper catches pivoted on the uprights of the cage and having the engaging portion lowermost and designed to engage with the dogs on the gate and the lowermost pivoted catches having the engaging portion uppermost and designed to engage with the dogs on the weights and the upper plates located on the guideways of the gate and designed to raise the upper catches clear of the dog on the gate and the lower slotted plates located on the guideways and designed to raise the catches clear of the dogs on the weights as and for the purpose specified.

MICHAEL TU RNBULL.

Witnesses:

B. BOYD, M. MOLAREN. 

